Buying a new JK 3.6L - Fuel Mileage, Options and Anti-spin Q's -
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back > Models > Jeep Wrangler Forums > Wrangler General Discussion > Buying a new JK 3.6L - Fuel Mileage, Options and Anti-spin Q's

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineFS: Jeep Fog Light LED Bulbs! Several Brightness Options! Black Friday is coming...Sign up for our Newsletter NOW!!!

Unread 07-06-2013, 01:19 PM   #1
Registered User
Join Date: Jul 2013
Location: Prince Albert, Saskatchewan
Posts: 1
Buying a new JK 3.6L - Fuel Mileage, Options and Anti-spin Q's

So, I've never had a Jeep before and I'm looking at ordering a '14 Unlimited Sport - Auto, Dual Tops, A/C, Power & Connectivity Group, Max Tow Package and the upgraded Alpine system.

The Ram truck I have now has the anti-spin diff... is it worth it for the Jeep? I've heard mixed opinions.

And finally, I see a lot of people saying what kind of mileage they get but not sure what motor they are running. Specifically for the 3.6L... would I ever regularly see 20mpg?

bula is offline   Reply With Quote Quick reply to this message
Unread 07-07-2013, 04:21 AM   #2
Registered User
2012 JK Wrangler 
Join Date: Jul 2011
Location: huntington, NY
Posts: 529
The tow-package is more useful for the 3.73s it comes with, but the LSD doesnt hurt either. Its not going to give you the same effects as an auto-locker, but its better than open. You will see 20+ off the bat on the highway for sure, I remember coming back from PA to NY after Rausch Creek and getting about 24 on the highway. Thats when I was stock, now with my 35s I will be lucky to get those #s. MPGs and modified Jeeps dont go hand in hand, at all. Period
[QUOTE=SFRautomotive;11992287]will a 3" body lift on my XJ still keep me LCG???[/QUOTE]
2012 JK 2Dr Crush Orange, 4.56's, 3" on OME frankenlift, 35x12.50x15 MT/R's
Orange Crush Jeep Club Member #55
tankinyj is offline   Reply With Quote Quick reply to this message
Unread 07-07-2013, 10:18 AM   #3
Registered User
2006 LJ Wrangler 
Join Date: Aug 2009
Location: Palatine, IL
Posts: 2,333
Driver and head winds have a huge effect. I have a 2013 JK Unlimited Rubicon with 3.73 gears, when it was stock I never saw 20mpg, high 18s low 19s at best on the highway.
[B][URL=""]13 JKUR Build thread[/URL][/B]

[COLOR="red"][B]For Sale:[/B][/COLOR] [URL=""][COLOR="Blue"]2013 4dr JK Painted black Hard Top[/COLOR][/URL] [URL=""][COLOR="Purple"]JKUR 18/59 springs and shocks[/COLOR][/URL]

[SIZE="1"][B]97 TJ:[/B] daughter 1 - 2.5L, Auto, 2" BB, 31" GY Duratrac
[B]98 TJ:[/B] Daugher 2 - 4.0L, 5spd, D44 rear
[B]06 LJ Rubicon:[/B] mine - Rokmen full up-armor, 8 adjustable CAs, front bumper, sliders, corners, Shrockworks rear bumper, 3" AEV/BDS lift, Currie HD stearing and Antirock, MT/r - k 35x12.5, SuperWinch, MC Overlines, York OBA
[B]13 JKU Rubicon:[/B] Wife's for now, Ace Rock rails & rear bumper tire carrier, Truck Lites, MC Game changer 3.5 lift, RR skids, PSC Brawler front bumper, Warn 9.5cti-s, 35" GY MTRs[/SIZE]
Filthy-Beast is offline   Reply With Quote Quick reply to this message
Unread 07-07-2013, 12:25 PM   #4
Registered User
2012 JK Wrangler 
Join Date: Dec 2011
Location: Silverdale, WA
Posts: 25
I have a '12 Wrangler Rubicon, 4.10 axles, and stock tires. My commute is 60 miles one way and is mostly highway. I'm seeing 20MPG without the A/C running and averaging 65-70MPH and it doesn't matter if the windows are up or down. When I use the A/C I see a drop of .5 to .8MPG indicated on the display and that corresponds to what I see when hand calculating my mileage. I do have to agree with Filthy-Beast about the headwinds. If the winds are high I'll see a drop of 1 to 1.5MPG indicated and around a 1MPG drop in my calculated fuel consumption.
Notchman is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. is not in any way associated with Jeep or the Chrysler Corp.